发表机构
IDLab, INTEC, imec-Ghent University; Nvidia（IDLab, INTEC, imec-根特大学; 英伟达）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究展示了基于28nm CMOS电容反馈跨阻放大器和硅光子集成芯片的平衡零差探测器，实现7.6 GHz带宽、27 dB散粒噪声抑制及54.8 dB共模抑制，适用于量子密钥分发等量子传感应用。
AI 中文摘要
本文展示了一种低噪声、高速的平衡零差探测器，该探测器结合了采用28 nm CMOS工艺实现的电容反馈跨阻放大器与在imec的iSiPP200硅光子平台上制造的自定义光子集成电路。该接收器实现了7.6 GHz的3-dB带宽、最大27 dB的散粒噪声抑制比、13.7 GHz的散粒噪声限制带宽以及高达54.8 dB的共模抑制比。这些结果证明了CMOS电容反馈跨阻放大器在要求苛刻的量子及相干传感光学应用中的适用性，包括连续变量量子密钥分发、量子随机数生成和光学相干断层扫描。
英文摘要
A low-noise, high-speed balanced homodyne detector is demonstrated, combining a capacitive-feedback transimpedance amplifier implemented in 28 nm CMOS with a custom photonic integrated circuit fabricated in imec's iSiPP200 silicon photonics platform. The receiver achieves a 3-dB bandwidth of 7.6 GHz, a maximum shot noise clearance of 27 dB, a shot noise-limited bandwidth of 13.7 GHz and a common-mode rejection ratio up to 54.8 dB. These results demonstrate the suitability of CMOS capacitive-feedback transimpedance amplifiers for demanding quantum and coherent sensing optical applications, including continuous-variable quantum key distribution, quantum random number generation, and optical coherence tomography.
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